DIBt-Approved Collection Tank Range Expanded Further

Otto Graf GmbH from Teningen has expanded its range of DIBt-approved sewage collection tanks by a further 5 products. You can now choose from DIBt-approved products in sizes from 1,000 to 6,500 litres.

New arrivals are the Cristall ® (1,600 and 2,650 litres) and Columbus ® (3,700 to 6,500 litres) underground tanks. The already well-established tanks from the GRAF sewage treatment plant range now have approval for use as sewage collection tanks. In addition to the classic underground tanks, GRAF can also provide two, special “problem solvers”:

The Herkules® collection tank has a capacity of 1,600 litres. The Herkules®  tank can be put together from two shells into one unit in just a few minutes.  Patented quick connectors and solid profile packing guarantee decades of endurance and impermeability. The low weight and manageable dimensions of the shells guarantee perfect handling.

The Rondus underground tank offers the best product features for difficult installation situations, such as ground and stratum water or a rocky subsurface. With a  tank height of just 80 cm it requires almost 40 % less ground excavation compared to conventional underground tanks.

This means you can install the tank yourself in places that would be impossible with conventional tanks.  As the tank is suitable for vehicle loading, nothing stands in the way of free design of the surface above.

GRAF gives a 15-year warranty on all underground tanks. Additionally, all GRAF collection tanks have DIBt building authorities’ approval. Thus, the tanks remain a safe investment even in the event of tightened requirements. If connection is made to the sewage network at a later stage, the tanks can be used for rainwater collection after thorough cleaning. The range is completed by suitable accessories, such as deaeration shafts, odour filters and a digital overflow monitor. 

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